Oh wow, this is a definite improvement over the others you've made! The only problem I've seen is the style of the shots - they can't seem to decide on whether they're part of a narrative film or a sketch comedy. It's hard to explain what I mean by that... Compare the plain yet effective shots of WKUK comedy sketches and the cinematic shots of extended narrative comedies like Spaced.
Another problem, at least in my own opinion, would be the music - it's nice that it fits well and all that, but it felt very off-tone to the actual content of the scenes. The peppy music fit the character, but the loud high-pitched notes that do that kind of stuff are more common in silent films as opposed to stuff like this. The kind of music that fit well was when he went to actually punch the guy and then suddenly stopped when he himself was stopped in his tracks when he caught his fist.
All in all though that video was pretty hilarious! The acting was fantastic for the most part, and the script was very well done (each of the character's had their own personality and appropriate lengths of dialogue). The whole fake fight scene did go on for a bit too long though.